We will follow persons with already diagnosed COPD (chronic bronchitis and/or emphysema). Obtain their smoking history: tobacco and marihuana and review their pulmonary function study results. Then we are planning to compare both groups.

Eligibility

Ages Eligible for Study:

25 Years to 90 Years (Adult, Senior)

Genders Eligible for Study:

Both

Accepts Healthy Volunteers:

No

Sampling Method:

Non-Probability Sample

Study Population

COPD patients recruited in pulmonary clinic.

Criteria

Inclusion Criteria:

COPD patients former or current tobacco smokers

COPD patients former or current tobacco and marihuana smokers

Exclusion Criteria:

History of COPD without pulmonary function testing

Refusal to provide smoking or marihuana used history

Contacts and Locations

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study.
To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below.
For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01096303